<template>
  <el-container class="home-container">
        <!-- 头部区域 -->
    <el-header>
        <div>
            <img src="../assets/heima.png" alt="">
            <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主题区域 -->
    <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse ? '60px':'200px'">
            <div class="toggle-button" @click="toggleCollapse">|||</div>
            <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" unique-opened :collapse="isCollapse" :collapse-transition="false" router
            :default-active="activePath">
                <!-- 一级菜单 -->
                <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
                    <!-- 一级菜单模板区 -->
                    <template slot="title">
                        <!-- 图标 -->
                        <i :class="iconObj[item.id]"></i>
                        <!-- 文本 -->
                        <span>{{item.authName}}</span>
                    </template>
                    <!-- 二级菜单 -->
                    <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
                        <template slot="title">
                            <!-- 图标 -->
                            <i class="el-icon-menu"></i>
                            <!-- 文本 -->
                            <span>{{subItem.authName}}</span>
                        </template>
                    </el-menu-item>
                </el-submenu>
            </el-menu>
        </el-aside>
        <!-- 右侧内容 -->
        <el-main>
            <!-- 路由占位符 -->
            <router-view></router-view>
        </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
    data(){
        return{
            // 左侧菜单数据
            menuList:[],
            iconObj:{ //一级菜单icon
                '125': 'iconfont icon-user',
                '103': 'iconfont icon-tijikongjian',
                '101': 'iconfont icon-shangpin',
                '102': 'iconfont icon-danju',
                '145': 'iconfont icon-baobiao'
            },
            isCollapse:false,  //是否切换
            //高亮的连接地址
            activePath:''
        }
    },
    created(){
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem("activePath")
    },
    methods:{
        // 获取所有的菜单
        async getMenuList(){
            const {data:res} = await this.$http.get('menus')
             if(res.meta.status !== 200)  return this.message.error(res.meta.msg) 
             this.menuList = res.data
             console.log('res',res);
        },
        //点击菜单折叠和展开
        toggleCollapse(){
            this.isCollapse = !this.isCollapse   //点击取反
        },
        //保存连接的激活状态
        // 关于高亮方案2，el-menu内:default-active="$route.path"也可以，更简单
        saveNavState(activePath){
            //点击的时候存path
            window.sessionStorage.setItem("activePath",activePath);
            this.activePath = activePath
        },
        logout(){
            // 清空token 并调整login
            window.sessionStorage.clear();
            this.$router.push('/login')
        }
    }
}
</script>
<style lang="less" scoped>
.home-container{
    height:100%
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content:space-between;  //两边贴边对齐
    padding-left:0;
    align-items: center;  //容器的中心
    color:#fff;
    font-size: 20px;
    > div{
        display: flex;
        align-items: center;
        span {
            margin-left: 15px;
        }
    }

}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right:none;
    }
}
.el-main{
    background-color: #eaedf1;
}
.iconfont{
  margin-right: 6px;
}
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color:#fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor:pointer;
}
</style>
